package com.sky.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.github.pagehelper.PageHelper;
import com.sky.annotation.AutoFill;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.enumeration.OperationType;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;

@Service
public class EmployeeServiceImpl extends ServiceImpl<EmployeeMapper, Employee> implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    @Override
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
//        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
//        queryWrapper.eq(Employee::getUsername, username);
        LambdaQueryWrapper<Employee> wrapper = Wrappers.<Employee>lambdaQuery().eq(Employee::getUsername, username);
        //Employee employee = employeeMapper.selectOne(wrapper);
        Employee employee = getOne(wrapper);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // 进行md5加密，然后再进行比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus().equals(StatusConstant.DISABLE)) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 新增员工
     *
     * @param employeeDTO
     */
    @Override
    public void saveEmployee(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO, employee);
        //设置账号的状态，默认正常状态 1表示正常 0表示锁定
        employee.setStatus(StatusConstant.ENABLE);
        //设置密码，默认密码123456
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
        //保存到TheadLocal中
        employee.setCreateUser(BaseContext.getCurrentId());
        employee.setUpdateUser(BaseContext.getCurrentId());
        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());
        //保存员工数据到数据库
        save(employee);

    }

    /**
     * 员工分页查询
     * @param employeePageQueryDTO
     * @return
     */
    @Override
    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO) {
        // 创建 Page 对象
        Page<Employee> page = new Page<>(employeePageQueryDTO.getPage(), employeePageQueryDTO.getPageSize());

        // 构建查询条件
//        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
//        queryWrapper.like(employeePageQueryDTO.getName() != null,
//                         Employee::getName, employeePageQueryDTO.getName())
//                    .orderByDesc(Employee::getCreateTime); // 按照创建时间倒序排序
        LambdaQueryWrapper<Employee> queryWrapper = Wrappers.<Employee>lambdaQuery()
                .like(employeePageQueryDTO.getName() != null,
                Employee::getName, employeePageQueryDTO.getName())
                .orderByDesc(Employee::getCreateTime);
        // 执行分页查询
        page(page, queryWrapper);
        //employeeMapper.selectPage(page, queryWrapper);
        // 返回结果
        return new PageResult(page.getTotal(), page.getRecords());
    }

    /**
     * 启用、禁用员工账号
     * @param status
     * @param id
     */
    @Override
    public void setStatusByid(Long id, Integer status) {
        //employeeMapper.updateById(Employee.builder().id(id).status(status).build());
        updateById(Employee.builder().id(id).status(status).build());
    }

    /**
     * 修改员工信息
     * @param employeeDTO
     */
    @Override
    public void updateEmployee(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO, employee);
        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(BaseContext.getCurrentId());
        updateById(employee);
        //employeeMapper.updateById(employee);

    }

}
